The boat was struck east of Snake Island, the statement said, referring to a small area of land off the Ukrainian coast and close to Romanian territorial waters, Russia Today reported.
The Russian military had identified the target as a Willard Sea Force watercraft and destroyed it in an airstrike, the ministry added.
California-based Willard Marine sold five boats to the Ukrainian military in 2013, with the US funding the acquisition, according to media reports. The vessels were delivered to Odessa in 2015. Eight boats were purchased from the same source several years prior, when Kyiv footed the bill.
The Sea Force line includes a range of rigid inflatable patrol boats. Ukraine purchased versions suitable for a team of up to six, ten, or 26 troops, depending on the size of the model.
Snake Island was captured by Russian forces shortly after hostilities with Ukraine broke out in February 2022. The Russian Defense Ministry withdrew troops from the island in June, in what Kyiv claimed to be a major military victory. However, Russia described the move as a gesture of goodwill to promote the Black Sea grain deal.
The arrangement allowed Ukraine to export farm products via the Black Sea. It collapsed last month after Moscow accused the West of failing to facilitate Russia’s agriculture and fertilizer trade, contrary to promises made by the UN when the deal was struck.
SKH/PR